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1. (WO2006037957) PROCESS FOR THE PURIFICATION OF 1, 4-BUTANEDIOL

Pub. No.:    WO/2006/037957    International Application No.:    PCT/GB2005/003741
Publication Date: 2006-4-13 International Filing Date: 2005-9-29
IPC: C07C 31/20
C07C 29/90
C07D 307/08
C07D 307/32
Applicants: DAVY PROCESS TECHNOLOGY LIMITED
WOOD, Michael, Anthony
WILD, Robert
JACKSON, Simon, Wayne
Inventors: WOOD, Michael, Anthony
WILD, Robert
JACKSON, Simon, Wayne
Title: PROCESS FOR THE PURIFICATION OF 1, 4-BUTANEDIOL
Abstract:
A process for the purification of a crude liquid feed stream comprising 1,4-butanediol and a minor amount of 2-(4-hydroxybutoxy)-tetrahydrofuran and/or precursors thereof wherein the process comprises passing the crude feed in the presence of hydrogen in a reaction zone over a heterogeneous liquid tolerant copper catalyst in the liquid phase at hydrogenation conditions and recovering a purified stream of 1,4-butanediol having a lower amount of 2-(4-hydroxybutoxy)-tetrahydrofuran than the crude liquid feed stream.